Micromeritics Gemini VII 2390a, Operator'S Manual, Page: 286 / 426

Appendix B Gemini VII
B-20 239-42828-01 - Nov 2013
4073- The analysis gas [name] does not match the model gas [name].
4074- The analysis temperature [nn] does not match the model temperature [nn].
4075- The models cannot be located in the models folder. Reinstall the software.
4077- Cannot get surface area for: [file name]
.
4078- Slope and Y-Intercept cannot be determined from the selected points.
4079- Points found with negative pressure values will not appear on the graph.
Cause: The model assumes a specific gas and the sample file uses a different
one.
Action: Select a model that assumes the same gas.
Cause: The temperature for the selected model did not match the analysis
temperature.
Action: Select a different model.
Cause: The models could not be located. They may have been inadvertently
deleted or moved.
Action: Reinstall the software.
Cause: The Isotherm report for the named overlay file has
Per gram
selected
for the
Volume Adsorbed
and the Isotherm report for the primary file
has a surface area option selected for the
Volume Adsorbed
.
Action A: Edit the Isotherm report for the named overlay file and select a
surface area option for
Volume Adsorbed
.
Action B: Click
Overlays
on the Report options window of the primary file and
remove the named overlay file from the list.
Cause: The Langmuir report cannot be generated from the selected points.
Action: Edit the calculation assignments in the Langmuir column on the
Collected Data window.
Cause: Collected data contains negative pressure values.
Action: Negative pressure points are automatically removed from isotherm
graphs. To display negative pressure values appear on the graph:
Open the sample file and click the
Collected Data
tab. Deselect
Use
calculation assignments
and then select the points with negative
pressures as Outliers.